| 摘要 |
<p>1481217 Purifying exhaust gas EXXON RESEARCH & ENG CO 9 July 1974 [20 July 1973] 30352/74 Heading B1F A method of purifying exhaust gas from an I.C. engine comprises causing the gas to pass radially outwardly through a first cylindrical bed 5 of NO x reducing catalyst, and then passing the gas together with oxygen from 8 outwardly through cylindrical bed 10 of oxidation catalyst.</p> |
